An assessment of the invasion status of terrestrial alien ferns (Polypodiophyta) in South Africa
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F20%3A00542297" target="_blank" >RIV/67985939:_____/20:00542297 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.sajb.2020.02.008" target="_blank" >https://doi.org/10.1016/j.sajb.2020.02.008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.sajb.2020.02.008" target="_blank" >10.1016/j.sajb.2020.02.008</a>
Alternative languages
Result language
angličtina
Original language name
An assessment of the invasion status of terrestrial alien ferns (Polypodiophyta) in South Africa
Original language description
A recent global assessment of terrestrial alien true ferns (Polypodiophyta, hereafter alien ferns) showed that alien ferns have a high probability of becoming naturalised or invasive once introduced. We provide the first systematic assessment, based on field surveys, of the invasion status of this large taxon in South Africa. Thirteen species of alien ferns were recorded outside of cultivation and subsequently identified as invasive in South Africa. Surveys were focused in known hotspots of alien and native ferns, with invasion density peaking along the eastern coastal belt of South Africa. Within the surveyed areas, alien ferns commonly occurred with other invaders, closer to water and often in indigenous forests. The species considered in this study generally occurred in similar habitat types across their native and globally introduced ranges (including South Africa). The potential spread of alien ferns in South Africa appears limited when compared to other major invaders, however, their common occurrence in indigenous forests highlights a concern for native, co-habiting fern species (in terms of competition). Our study provided regulatory insight for 12 previously unregulated alien fern species in South Africa. We propose that eradication remains feasible for Diplazium esculentum, Doodia caudata, Lygodium japonicum, Phlebodium aureum and Platycerium bifurcatum. A risk analysis for Sphaeropteris cooperi classified the species as high risk and comprised the first quantification of risk for any alien fern species (inclusive of aquatics) in South Africa. The information put forward in this study can be used to inform risk analyses for the remaining species in South Africa, as well as countries with similar habitats and climates. Furthermore, widely traded species need to be identified as candidates for future risk assessment since horticulture is an important introduction pathway for alien ferns globally.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
South African Journal of Botany
ISSN
0254-6299
e-ISSN
1727-9321
Volume of the periodical
131
Issue of the periodical within the volume
july
Country of publishing house
ZA - SOUTH AFRICA
Number of pages
10
Pages from-to
64-73
UT code for WoS article
000539958500008
EID of the result in the Scopus database
2-s2.0-85079898337